Ironwood, MI
Climate overview — based on NOAA 1991-2020 normals from IRONWOOD #2, MI US.
Year-round temperatures (°F)
Avg high
Avg low
Climate summary
Ironwood has an annual average temperature of 40.2°F with about 0 inches of precipitation per year. The warmest month is July (average high 77.3°F), and the coldest is January (average low 2.0°F).
Pleasant months
3 / 12
avg high 65–80°F, low ≥ 50°F
Annual swing
54.8°F
warmest to coldest month
Best time to visit Ironwood
Full guide →Climate change signal
All-time records →366 of 366 (100%) of Ironwood's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 2010s | 34 | |
| 2020s | 332 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 20.3°F | 2.0°F | 11.2°F | in | — | — |
| February | 25.8°F | 4.3°F | 15.1°F | in | — | — |
| March | 37.2°F | 13.7°F | 25.5°F | in | — | — |
| April | 49.2°F | 26.9°F | 38.1°F | in | — | — |
| May | 63.5°F | 40.3°F | 51.9°F | in | — | — |
| June | 72.9°F | 50.2°F | 61.6°F | in | — | — |
| July | 77.3°F | 54.7°F | 66.0°F | in | — | — |
| August | 75.7°F | 52.0°F | 63.9°F | in | — | — |
| September | 67.6°F | 45.6°F | 56.6°F | in | — | — |
| October | 53.4°F | 34.0°F | 43.7°F | in | — | — |
| November | 37.6°F | 22.9°F | 30.3°F | in | — | — |
| December | 26.1°F | 11.1°F | 18.6°F | in | — | — |
Last spring / first fall frost
All-time recordsHottest, coldest, wettest
Planting calendarWhat to plant, and when